Exochus | BRITISH ICHNEUMONS. 41 

basally glabrous; metapleurae basally elevated and sparsely punctate ; 
costulae distinct, ‘‘interdum tamen subobsoleta”; areola twice longer 
than broad, and supracoxal areae glabrous. Abdomen shining, black and 
pubescent; first segment a little constricted basally, with carinae extend- 
ing to its centre. Legs of g sometimes entirely red, but usually the 
anterior red with coxae black and the hind ones infuscate with tarsi and 
base of tibiae paler; femora stout. Wings slightly infumate, with the 
areolet entire and subsessile; stigma nigrescent, radix and tegulae stra- 
mineous. Length, 6—7 mm. 
Holmgren considers this species distinct in its stout conformation, less 
basally produced head and more or less distinct costulae; and Thomson 
in its large size, convex body, subinfumate wings, elongately postfurcal 
lower basal nervure, large areolet which emits the recurrent nervure 
beyond its centre, and the colour of the legs which he considered pale 
throughout. It is the only British Zwochus with both areolet and costulae. 
This species has been recorded rarely from Germany, France and 
Sweden at the end of July. Marshall introduced it as British in his 1870 
Catalogus, doubtless on the strength of the four specimens in his collec- 
tion from Manchester, Grovely Wood near Salisbury, Botusfleming in 
Cornwall, and Dulwich on 5th June. Bignell bred it on 4th July from 
the Pyralid moth, Botys ferrealis, in Devonshire. But I have seen no 
E-xochus with both costulaeand areolet, a feature also found only in 77rclestus 
areolatus and 7. albicinctus, Thoms. 
14. gravipes, Grav. 
Ichneumon gravipes, Gr. Mem. Ac. Sc. Torin. 1820, p. 384, ¢.  Exochus 
gravipes, Gr. I. E. ii. 351; i. Suppl. 693; Steph. Illus. M. vii. 267; Ratz. Ichn. d. 
Forst. i. 124; Fonsc. Ann. Soc. Fr. 1849, p. 237; Holmgr. Sv. Ak. Handl. 1854, 
p.79; lib. cit. 1855, p. 310, pl. ix, fig. 20; Ofv. 1873, p.63; Brisch. Schr. Ges. 
Kénig. 1871, p.99; Schr. Nat. Ges. Danz. 1878, p. 107; Voll. Pinac. pl. viii, fig. 6 ; 
Thoms, Deut. Ent. Zeit. 1887, p. 207, ¢ ¢. E. prosopius, Holmgr. Sv. Ak. Handl. 
1854, p.79; lib. cit. 1855, p. 310, ¢; Brisch. Schr. Ges. Konig. 1871, p.99, 3 ? 
(2ec Grav.). 
A shining, punctulate and pubescent species. Head somewhat con- 
stricted posteriorly; face protuberant, pubescent, black and_ strongly 
punctulate ;. eyes slightly emarginate above antennae ; genal margin 
slightly dilated and reflexed below base uf mandibles; frons finely punc- 
tate and impressed on either side in front ; palpi testaceous, vertex with 
small pale lateral dots, @ with the face usually flavous above. Antennae 
nigrescent and subfiliform though apically attenuate, of 2 half length of 
body and in ¢ somewhat longer; flagellar joints not strongly discreted, 
the first half as long again as the transverse second. ‘Thorax stout and 
black, twice longer than high with the pleurae sparsely punctate and 
speculum glabrous; notauli distinct; interpectoral sulcus broad between 
intermediate coxae and apically subtruncate ; areola broad and hexagonal 
with the basal area often distinct ; costulae strong, spiracles large and 
oval. Scutellum subdeplanate, immaculate and margined nearly to its 
centre. Abdomen black and apically subsericeous, a little longer and 
narrower than the head and thorax with segments two to five subparallel- 
sided or in 9 subexplanate beyond the centre; basal segment slightly 
dilated apically, shining and laterally punctulate with the carinae 
extending to its centre in g¢, rather shorter in 9; second segment dis- 
cally glabrous and laterally finely punctate; terebra concealed. Legs 
